[clang] Clang: Support minimumnum and maximumnum intrinsics (PR #96281)

[YunQiang Su via cfe-commits]

wzssyqa wrote:

> Can you add a test that passes a non-float value and checks that it's rejected?

Do you mean something like this?
```
$ cat xx.c 
#include <math.h>

float f(char *a, char *b) {
        return fminimum_num(a, b);
}
$ ./bin/clang -std=c23 -O2 -S -emit-llvm xx.c 
xx.c:4:22: error: passing 'char *' to parameter of incompatible type 'double'
    4 |         return fminimum_num(a, b);
      |                             ^
/usr/include/x86_64-linux-gnu/bits/mathcalls.h:409:40: note: passing argument to parameter '__x' here
  409 | __MATHCALLX (fminimum_num,, (_Mdouble_ __x, _Mdouble_ __y), (__const__));
      |                                        ^
1 error generated.

```

https://github.com/llvm/llvm-project/pull/96281